Semi-automatic stereotype-plate casting and cooling machine



C. E. HOPKINS. SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY15,I914- RENEWED JULY 5,1919- Patented Feb. 17, 1920.

:2 sums-sum 1.

ITEM/k1 Wit/lama)" C. E. HOPKINS. SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY l5. I914- RENEWED JULY 5.1919- Patented Feb. 17,1920.

l2 SHEETS-SHEEI 2- C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY 15. I914. RENEWED JULY 5.1919.

1 30,942. Patented Feb. 17, I920.

12 SHEETS-SHEET 3.

12 4 -'II III B 7 I l0 5 1.9 i 50 Z? 0 51 C. E. HOPKINS. SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY I5, I9l4. RENEWED JULY 5.1919.

Patented Feb. 17,1920.

12 SHEETS-BREE] 4.

gr may;

Wtzzarrw:

C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CASTLNG AND COOLING MACHINE.

APPLICATION FILED MAY 15, I914- RENEWED JULY 5, I919.

Patented Feb. 17,1920.

12 SHEEISSHEEI 5.

. JhGTSiLiI/Z CZ Fl/awr/zu.

a Mr 7 x I NR xx C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CASTI-NG AND COOLING MACHINE.

APPLICATION FILED MAY15 |9|4- RENEWED JULY 5 1919- 1,330,942. Patented Feb. 17,1920.

l2 5htElS-SHEEI 6.

Witrzanar; m C ZZZ/2172M C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CA-STLNG AND COOLING MACHINE.

APPLICATION FILED MAYIS I914 RENEWED JULY5 1919- QN WWW ZR,

-- a.- $3 MN QQN NN O WNW r I I I l l2 SHEE1S-SHEEI 7.

Patented Feb. 17,1920.

Far mgip'.

C. E. HOPKINS. SEMI-AUTOMATIC STEREOTYPE PLATE CASTIING AND COOLING MACHINE,

APPLICATION FILED MAY 15, I914. RENEWED JULY 5,19I9- Patented Feb. 17, 1920.

has; OZ.

9 Merv-4 rat a 2 55/21/17.

C. E. HOPKINS.

SEMI-AUTOMATIC STEREOIYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY t5, I914. RENEWED JULY 5.1919.

1,330,942. Patented Feb. 17,1920.

' 12 5htLISSHtEl 9.

JZL

lZL

\ &

Wttzaalae's H E 16. 7"? 7" by Way! WWW I C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY l5, I914. RENEWED JULY 5. 1919.

Patented Feb. 17,1920.

I2 bHhtISSHEEI 1U.

C. E. HOPKINS.

SEMI-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY 15, 1914. RENEWED JULY 5,1919.

1 ,330,94:2 Patented Feb. 17, 1920.

wrw

c. E. HOPKINS. SEMl-AUTOMATIC STEREOTYPE PLATE CASTING AND COOLING MACHINE.

APPLICATION FILED MAY 15, 1914. RENEWED JULY 5.1919.

Patented Feb. 17, 1920.

12 SHEETS-SHEEI 12.

' I? zwm I SYKMW UNITED sTAT s PATENT OFFICE.

CHARLES E. HOPKINS, 0F PLAINFIELD, NEW JERSEY.

SEMI-AUTOMATIC STEREOTYPE-PLATE CASTING AND COOLING MACHINE.

Specification of Letters Patent.

Patented Feb. 17, 1920.

Application filed May 15, 1914, Serial No. 838,647. Renewed July 5; 1919. Serial No. 308,834.

To all w hom it may concern Be it known that 1, CHARLES E. HOPKINS, a citizen of the United States, residin at Plainfield, in the county of Union and tate of New Jersey, have invented a new and useful Semi Automatic Stereotype Plate Casting and Cooling Machine, of which the following is a specification.

My present invention contains many improvements in the stereotype plate making ated by the movement of the back to turn the core; means on the back independent of the matrix clamps for positioning a matrix; means independent of both back and core for supporting a pouring sheet; means for moving the pouring sheet longitudinally away from the margin of the matrix; means operated by the back for moving the pouring sheet; means on the pouring sheet support for positioning the core; means carried by the core for simultaneously separating the bottom ring from the cast plate and the plate from the core and thereafter alining the plate with a finishing mechanism; means by which the plate starts the mechanism through one cycle of operations; a plate positioning stop provided with means for starting the finishing mechanism through a cycle and thereafter stop the same.

The invention also involves improvements in details of construction of the parts thereof.

Reference is to be had to the accompanying drawings in which Figure l is a side elevation of the complete machine with the core turned to the delivering position, a cast plate being shown resting on the plate lifting roller, and over the core;

Fig. 2 is a front side view of the casting mechanism showing the back in the open position and the core turned by the back supporting means;

Fig. 3 is a side elevation of the casting mechanism, showing the casting members in closed position, the front side frame being removed;

Fig. 4 is a plan view of the casting mechanism in the closed position;

Fig. 5 is a longitudinal central section taken through the center of the casting member in closed position;

Fig. 6 is a front view of the same;

Fig. 7 is a sectional plan view of the parts in the position shown in Fig. 3 and showing the matrix clamping, casting chamber looking, and plate lifting mechanism;

Fig. 8 is an enlarged fragmental end View of the core and back locking mechanism, matrix positioning means and matrix clamping mechanism;

Fig. 9 is a plan view of the finishing mechanism with the finishing arch and its support removed, a portion of the shaving knife shaft broken away, and the trimming mechanism sectioned;

Fig. 10 is a central longitudinal section of part thereof;

Fig. 11 is a cross section on line 1111of Fig. 9;

Fig. 12 is a cross section on line l2-12 of Fig. 9;

Fig. 13 is a cross section taken at the end of the arch in Fig. 9;

Fig. 14 is a cross section taken on line 1414 of Fig. 9, showing the mechanism in position half way through its cycle.

Fig. 15 is a cross section on line i1515 of Fig. 9;

Fig. 16 is a side view of one of the arch operating toggles, and associated parts;

Fig. 17 1s a cross section of the same on line 1717 of Fig. 16;

Fig. 18 is a sideview of the arch supporting and ositioning brackets with the arch plate rol ers attached;

Fig. 19 is an end View thereof; 7

Fig. 20 is a central longitudinal sectional view of the cooling mechanism, and

Fig. 21 is a cross section thereof on the line 21-21 of Fig. 20.

The mechanism is shown as supported between side frames A and B, and cross frames C and D. The casting back 10 is mounted on a pivot bracket 11 fast on a cross pivot shaft 12 which operates in bearings formed in the side frames A and B. A stop 13 is formed on the bottom of the bracket 11 which engages with a cross brace 14 fixed between the side frames. This stop holds the back up in the open pos tion (see Fi 2). v 1

ountcrbalance springs 15 are wound about the pivot shaft 12. One end of each spring is fast in a collar 16 which is fast on the shaft and the other end engages against the cross brace 14. The springs are drawn up sufliciently to counteract the weight of the back.

A' locking strip 17 is mounted on each straight face of the back 10. The strip 17 is formed with a raised extension 18 projecting toward the axis of the backs concavity. A matrix bolster packlng strip 19 is located beneath the raised extension 18 and rests upon the back. This packing strip is provided wlth a groove 21 in which a loose fitting tongue 20 formed on the under side of the strip 17 engages and holds the bolster packing strip in position, so that it can have a slight swinging movement. This 1s necessary to permit-the plate to pass the, loose end of the bolster packing strip which protrudes slightly over the edge of the backs concavity. See Fig. 8.

For the purpose of positioning the matrix M in the concavity of the back and holding it in curved position until the matrix clamps are brought into act on, there are provided two matrix positioning sl1des 22 at each side of the back. The slldes 22 are supported in angular grooves formed in projections 24 which are located on top of the locking strips 17. These slides 22 are moved down their inclined grooves by the operator, over the top of the bolster packing strips, 19 and over the edge of a matrix located in the backs concavity. They hold the matrix in curved position agalnst the backs concavity. They are later pushed back by locking and matrix clamping bars carried by the core as hereinafter described. See Figs. 7 and 8.

The segmental core 30 is mounted on.

brackets 31, 31, one of which is located on each of its straight edges. These brackets 31, 31 are held a distance away from the cores straight. face by positioning collars 32 (see Fig. 7). A pivoting yoke 33 is mounted in bearings formed in the side frames A and B. The yoke is provided with two seats 34, 34 fitted to like seats on the cores brackets 31, 31. The yoke, brackets and collars are joined to the core by studs 35. See Figs. 6 and 7.

Located in the space-made by the collars 32 between the core and brackets are locking and matrix clamping slide bars 36, 36. These locking and matrix clamping bars 36 are formed with slotted holes in which arelocated the positioning collars 32. These slotted holes permit the sliding of bars 36 by two toggle joints 37, operating on studs straight faces of the 1 fast in the bars. The toggle joints are united by a slide bar 38 located in bearings formed on cross braces in. the cores concavity.

The slide bar 38 of the toggle joint is caused to move longitudinally in its bearings by a hand operating lever 39. This is mounted on a rock shaft 40, located in bearings formed on the brackets 31, 31, and connected to the slide bar 38 by a rock arm 41, fast on the rock shaft 40.

It will be seen that the moving of the lever 39 will cause the toggle-joints to expand or contract, thereby moving the slide bars 36, 36 over the straight edges of the core 30 or withdraw them as desired. When a casting chamber is formed by placing the core 30 and its co-acting back 10 in the vertical position the slide bars 36 are moved out over the edges of the core 30 and projections 43, formed on the edges of the bars 36, move into recesses beneath. the extensions 18 formed alon the adjacent edges of the locking strips 1 and over the packing strip 19, and lock the core and back together throughout their lengths.

The operation of locking the core and back in casting position, also clamps the straight raised bolsters of the matrix M between the bolster packing strip 19 and a slight projection 44 formed on the casting chamber side face of the slide bars 36. Durmg the operation of locking the casting chamber the slide bars 36 engage the projecting ends of the matrix positioning slides 22 and force them back out of operative position, as shown in Fig. 8.

The bottom of the casting chamber is closed by a segmental ring 45 provided with the usual bevel andmatrix margin recess on the chamber side. This ring'45 is fixed to a short rod 46 movable in a bearing formed through the closed bottom of the core 30. This rod 46 is connected by a link 47 to an arm 48 of a two arm crank fast on a cross shaft 49 which operates in bearings on the brackets 31. The purpose of thus mounting the bottom ring 45 is to move it back from the cast plate and free the bevel cast on the plate from beneath the recessed bevel formed on the ring 45, so that the plate can be lifted free from the cores surface, and recesses J (Fig. 2).

The means shown for lifting the plate comprises a series of flanged antifriction rollers 50 which are mounted on the free ends of short-arms 51 fast to cross shafts 52, 52 and 49, located in bearings formed on the brackets 31. The three shafts 52, 52, and 49 are caused to operate in'unison by a connecting rod 53 attached to short crank arms 54, fast on the shafts 52, 52 and arm 48 on the two-arm crank fast on the shaft 49.

This plate lifting and bottom ring separating mechanism operated to move'the cross frame C. A collar 58 fast on the rod 56, near its top pivot,'engages the upper surface of the swivel block 57 as the core nears the horizontal position. As the turn-- ing of the core continues it forces the crank arm 55 up, which action first starts the bottom ring to move away from the plates beveled bottom end and then engages the flanged rollers 50 with the straight side edges of the plate. As the movement con- .tinues this forcesthe plate free from the .cores surface into the delivery or raised position shown in Fig. 1.

On reversing the core to the vertical position a collar 59, fast on the bottom end of the rod 56, engages'the underside of the swivel block, which causes the rollers 50 to in the vertical position by move back into the lowered position and the bottom ring into casting position.

The core is turned by a hand lever 60 fast on the front end of the pivot formed on the core supporting yoke 33'. A projection 61 located on the hub of the lever 60 engages against an adjustable positioning stop 62, fast on the side frame A when the core is turned to its plate delivery position, and alines the rollers v50 with like rollers 90 mounted in bearings formed in the cross frame C. On reversing the core it is stopped an adjustable stop 63 on a cross brace 64;

The core 30 is provided with recesses J for forming projections J on the concave surface of the riser of the plate P.

A thin metal pouring sheet 70 is provided for guiding the metal over the top margin of the matrix M during the casting operation. The pouring sheet 70 is fixed to the concave face of a support 71, which holds the curved sheet 70' vertical at'all times. The support 71' is fast to two vertical rods v72, and the rods 72 are supported in bearin s 73, fixed on each side frame A and'B.

The lower ends of the rods 72 are provided with fixed eXtendiIlg arms 74 carrying antifriction cam rollers 75 located in camways formed in two cams 76 fast on the core pivot shaft 12.

The camways in cams 76 are 'so shaped that the turning of the back to the vertical position draws the pouring sheet down so its lower curved end will engage the casting side of the top margin of the matrix. After making a cast on reversing the movement, it is withdrawn from between the cast and the margin ofthe matrix and any fins of metal that may have formed thereinbetween.

By mounting the pouring sheet in this manher the operator is not required to handle it in the old ways.

For the purpose of accurately positioning the pouring sheet in relation to the core 30 there are provided positioningpins 77 which are located in extensions formed on the support 71. These positioning pins 7 7 enter corresponding recesses 0 formed on the top end of the core, and hold the core in locked casting position until the sliding bars 36 complete the formation of the casting chamber.

The pouring sheet is made on a radius equal to that of the back and of a circumferential length equal to the. combined width of the matrix and its raised bolsters. Thus I am able to extend my locking device to the full length of the back and core and thus grip the side edges of the pouring sheet by the same means as I grip the raised bolsters of the matrix.

Owing to the straight ends of the bottom ring 45 engaging against the casting sides of the slide bars 36 instead of beneath the bottom ends of the bars, the ring can be extended up into the casting chamber when a shorter stereotype plate is desired as shown in full lines in Fig. 5.

The camways of the cams 76 are formed so that the pouring sheets vertical movement takes place during the first half turn of the cams in pivoting the back 10 to the open position.

At the end of the first half turn of the back a pawl 25, pivoted on an extending arm 26, formed on the backs supporting bracket 11, engagesa pin 65 fast on the lower end of the core 30, being pressed by a spring 27. As the turning continues the pawl tilts the coreon its axis to the position shown in Fig. 2. The purpose of thus tilting the core is to place a cast stereotype plate on its periphery in a handy position for the operator standingat the swinging end of the back to reach out and remove the matrix from the type face of the cast plate, and thereafter inspect the same before turning the core and delivering it to the finishing mechanism.

Both the back and core are provided with ble tubing to a source of supply and discharge.

A back operating handle 84 is fast in the longitudinal rib formed on the backs exterior.

Having described the casting features of my invention I will now explain the construction of the finishing mechanism and how the stereotype plate itself starts it through a cycle of operations, how the plate is clamped by the arch, without the axial displacement of the said plate; how the riser is separated from the type port on of the plate, and how it is. thereafter disposed of. (See Figs. 9 to 19.)

-In describing the casting features we left the stereotype plate P, supported on the flanged rollers 50 and in almement with rollers 90 operating in brackets formed on thecross frame O. As the plate in this position is free from the core 30 it starts to move down the inclined series of rollers 50 engaging with the guide rollers 90 and passes on down unt11 1t is located on the guide rollers 91 beneath the arch 101 when it is stopped by projections J on the concave surface of the riser portion ofthe plate P coming into contact with a positioning stop 149 (see Figs. 10 and 13 The finishing mechanism is supported between the side frames A and B and cross frames C and D. The arch 101 is mounted on and fast to movable positioning supports 102, 102. The inner faces of the supports 102 are provided with short'brackets on which are mounted the set of guide rollers, 91. The supports 102 are located above V shaped projections 103 formed on the top edges of sidefra-mes A and B, corresponding V recesses are made in the underside of the supports 102. Each support 102, 102 is made fast to the top ends of two vertical rods 104, operating in bearings formed in brackets 105 and 106, made fast to each upper and inner face of the side frames. The lower ends of the rods 104 are located in bearings 107 fast to the lower inner face of the side frames.

The arch 101 and coacting guide rollers 91 and 92 are caused to rise or descend by two pairs of toggle-joints, located between each pair of vertical rods 104. The upper arm 108 of each toggle joint is pivoted to fixed brackets, one to bracket 105 and the other to bracket 106, their coacting arms 109 are pivoted to cross ties 110, 110 made fast to and joining each pair of vertical rods 104. By thus pivoting the upper arm of the toggle joint to a fixed support and the lower arm to a support made fast to the vertical rods 104 the arch is drawn down by extending the toggle-joints, and raised by contracting the same.

For the purpose of removing the strain from the toggle-joints when raising the arch there are provided four counter-balance springs 111, one of which is wound about each rod 104 between the tops of bearings 107 and collars 112 fast on the rods.

The two sets of toggle joints are caused to operate in unison by links 113 and 114, which connect the swinging ends of the toggle-joints to the loose 'end of a vertical caused to make one revolution to each cycle of operations by a worm wheel 120 fast on the end of the cam shaft 119. The worm wheel is driven by a worm 136 located above the worm wheel and fast on a cross driving shaft 137 operating in bearings formed on the cross frame C. Each of the toggle-joint tie pieces 110 is provided at one end with extensions in which are fast vertically disposed and bent rods 121. The top ends of these rods are provided with short studs upon which are mounted guide rollers 92, 92.

In operation the worm wheel 120 makes one revolution to each cycle of finishing operations, first extending the toggle-joints which push down the tie pieces 110 fast on the rods 104, thereby drawing down the arch 101 which engages with the periphery of the stereotype plate. This operation lowers the guide rollers 91 and 92, and deposits the straight edges of the stereotype plate on top of four supports 93, 94 and 162, 162, which are alined with, but slightly below, the top surface of the guide rollers when they are in raised position. The supports 93 and 94 are made L shaped. The top edges of the L supports 93 and 94 act as plate holding means for supporting the plate during the finishing operations. The supports 162, 162 are fixed within the opening of the fixed ring support 160 of the trimming mechanism, and are intended to support the riser portion of the plate while it is being separated by the trimming tools as hereinafter described.

The L supports 93 and 94 are provided with recesses 124 in which the guide rollers 91 are located. The support 93 is fixed to extending arms formed on the fixed bracket 105.

Owing to an uneven shrinkage of the stereotype plates there is a slight variation in the length of its circumference, to compensate which the L support 94 is made slightly movable, and is mounted on arms 95, 95, which are pivoted on studs fast in the ends of the fixed bracket 106. This pivoted L support 94 is held up in the normal lowered position by projections 96, 96 formed on the pivot arms 95, engaging against the side frames B, so that it is slightly lower than the upper face of the guide rollers 91, when the rollers are in the raised position as previously stated. But

-when the guide rollers 91 are lowered, by the lowering of the arch, the plate, as stated, is transferred to the upward projecting arms of the L supports 93 and 94. As the arch nears its lowered operative position a pin 97 fast on the toggle-joint connecting link 114 engages the free end of a stiff spring bar 98 fast to'the lower face of the L support 94. This causes the support to swing up and force the curved plate solidly against the dome of the arch 101. Upon the completion of the finishing operations the connecting link 114 reverses its movement when a pin 99, fixed in the link 114, forces the spring bar 98 back and holds the L support 94 down in the lowered position.

The shaving of the ribs formed on the interior of the cast plate is accomplished by a shaving knife 130, mounted on a projecting ledge ,131, formed on a hollow knife shaft 132. This knife shaft 132 operates in bearings 133 and 134 formed on top of the cross frames (Band D. r The knife shaft isrevolved by a worm wheel 135 made fastto the end of the shaft, and in frontof the bearing 133. This worm gear is located above and in mesh with thedriving worm 136, which, as stated, is fast on the cross drivin shaft 137, mounted in bearings formed on the face of the cross frame C.

A clutch mechanism is provided and arranged so as to engage and disengage the driving shaft with a constantly driven pulley 138, which is mounted so as to revolve about the front end of the drivin shaft 137. The clutch mechanism I emp oy is well known in the trade and therefore does not need explaining. The driving member 139 of the clutch is fast to the pulley 138 and the driven member 140 is fast to the driving shaft 137. A yoke 141, pivoted above the shaft member 140 to the cross frame G operates in a groove formed in the shaft member. This yoke 141 is caused to swing back and forth to engage and disengage the clutch members by a spring rod 142, one end of which is pivoted to the yokeand the other end. supported in an e e bolt 143, fast in the cross frame C. ounted on this rod 142 in front of the eye bolt is a coil compress spring 144.; The spring 144 is held under tension by a collar fast on the rod 142. The function of this spring is to force the clutch members into engagement.

A trip mechanism, operated in connection with the shaving knife shaft, causes a trip arm 145 to engage with a pin 146, located in the spring rod and push the rod back against the action of the spring 144 at the end of each cycle of operations. This trip arm 145 is located in a bearing made through the rim of the worm gear 135. The engaging end of this arm 145 is bent down so as to en 'age in front of the trip pin 146. The opposite end of the arm 145 is fast in startthe mechanism a connecting bracket 147 which is fast on cast with projections J on its concave surface located beneath the riser. These projections J engage in front a stop mounted on a bearing formed on the knife shaft, and made fast to the end of a slide block 150 operating through a slotted opening in the knife s aft and attached to the long rod 148. A bufler spring 151 is wound about the lon rod 148 between the block 150 and the earing 152 of the rod 148. See Fig. 10.

When a stereotype plate is freed from the core 30 it comes gliding down over the core antifriction lifting rollers 50, and over guide rollers 90 and 91, and engages its projections J against the slidingstop 149 with'considerable force and pushes the stop back against the action of the buffer sprin s 151 until the block 150 comes of the slot in which it operates. At this juncture the stem 153 of a spring latch 154 on the slide stop 149 passes beyond the end of the slide stop bearing, and is pushed out by the spring. It engages the edge of the bearing, and holds the stop in the advanced position against the rebound action of the buffer spring. See Figs. 10 and 14.

This moving of the slide stop 149 has slid the trip arm 145 from in front of the trip 149 slidingly up against t e end pin 146, leaving the spring 144 free to push the clutch member into engagement and of operations. The driving shaft revolves the worm which in turn revolves both worm gears 120 and 135, causing the arch to come down on top of the plate and the slide stop 149"to move around from in front of the projections J on the plate. But when the mechanism is about half through its cycle, as shown in Fig.14, the end of the stem 153 of the spring latch 154 engages a face cam 155, fast on the underside of the bearing 134, and is pushed back. Whereupon the buffer springs once more come into action and push the long rod 148 back into the starting position and as the cycle nears its end of operations the trip arm 145 once .more engages in front of the pin 146 and going through its cyclepoint and then up a steep incline to 160 and at each See Figs. 10 and 14.

fast to the cross frame Dby three cap screws. 161. See Figs. 1, 9, 10, 12 and 14.

.Within the hollow of the ringbearin side are located the fixe' plate supports 162, which act to riser during the trimming operations. These supports are alined with the L supports; 93 and 94 and like them located slightly below the top level of the guide rollers, when they are in the raised position.

"Mounted on the outside of the ring' bearing 160 are two toothed rings 163 and 164..

Ring 163 is referred to as the tool ring and 164 as the cam ring. The cam ring 164 is located'next to the flange of the ring hear ing- 160, and the tool ring 163 against the cam ring 164; Both rings 163 and 164 are held in position on the ring bearing 160 by the flange of a cover' 165 fast to and extending about the periphery of the flange of the ring bearing. These toothed r1ngs 163 and 164 are driven by gear wheels 166 and 167 fast on a shaft 168, operating in bearings in the cross frames C and D. The shaft 168 is driven by a helical ear 169, which is fast on the end of the sha and located beneath, and in mesh with, a like gear 170, fast on the driving shaft 137. I I V y y The tool ring'163 is provided with four movable trimming tools 173 mounted in holders, located on its face and at each quarter of its circumference, and the cam ring 164 with a groove, facing the tool ring, divided into four equally disposed eccentric carnways 172, joining each other into a continuous cam groove.

The tool ring 163 is so timed that it makes ten revolutions .during each cycle of operations, and the cam ring 164, so that it makes nine and three fourths revolutions during the cycle.

A tool operating cam roller 171 is located in each of the four eccentric camways 172. These are caused to travel from thehigh point of each eccentric camway to its lowest the high oint of the advance eccentric camway, durmg each cycle of operations, owing to the tool ring traveling one fourth of a revolution more than the cam ring. (See Fig. 14). The trimming tools 173 consist of steel bars formed with beveled cutting ends. The tools 173 are each fast in a sliding tool holder 174, which operates in guideways fast 55 to the face of the tool ring 163. Each tool holder is provided with an extension 176 which operates in a slot .openin through the tool ring. See Fig. 10. A %earing is formed on the face of the extension '17 6 upon which the cam roll 171 is mounted.

In operation, as the rings are revolved through their cycle the tools advance to-- ward and engage the periphery of the curved plate, and owing to the tools being support the positioned to follow each other in se 'uence.

in their advancing o erations, ually separate the riser and evel theedge of the riser is held up bythe supports 162, fast within the ring support 160. Just',. previously the slide stop 149, mounted-"on the shaving knife shaft 132, has been revolved from in front of-the projections J on the riser'and the shaving knife 130 has shaved o ff the ribs cast beneath the type face por; tion of the plate making the same the proper thickness. As the revolution of the knife shaft continues, the slide stop is brought up.

into its original position, but to the rear of the rojections, J, and leaves the riser free to tip forward over the ends of the fixed supports 162 and slip down through the "gap between the cross frame D and the end of a cooling device located in front.

As the riser is now separated and out of the way, the toggle-joint tie piece 110, which supports the two guide rollers 92, 92, moves the rollers up, thus "closing the gap through which the riser passed out; Simultaneously with this movement, the arch israised and the guiderollers lift the now finished stereotype late off the L supports, leaving it free" to glide down the inclined guideway. over the antifrictio-n guide rollers 91 and 92, and

pass over the rollers 190, on over the top. edge of a cooler sink 191 on a set of guide rollers 192., The rollers 190 are mounted in front of the cooler sink and the rollers 192 on studs located within and at each side of the sink. (Figs. 9, 20 and 21.) v

The coolin device illustrated comprises the sink 191 ast between the side frames A and B, and located in alinement with the finishing mechanism. Each inside wall of the sink is provided with a set of the flanged guide rollers 192 for supporting a finished stereotype plate, during the coolin operation. Located longitudinally and a ove the sink 191 is a tube 193, closedatboth ends. This tube is supported by brackets 194 and 195 fast to the end walls of the sink.

The tube is provided with a slotted opening 196 on its top side. Flexible curved wings 196, 196 are made fast at each side of this slot 196. The free ends of each wing are provided with a stiffening piece 197, 197 on which are extensions 198. Each extension 198 is formed with a slot in which is located a pin 199, fast to the end of four of the flanged guide roller studs. See Fig. 20. The periphery .of' each flanged guide roller 192 is formed with a slightly fiat surface 200, and a bevel surface 201.

Cooling water is admitted to thechainher in the tube .193 through a supply pipe 202, let in through the lower closed end. The water passes out of the tube through the long slot 196, made in the top side of the tube, and flows down over the curved flexiover the sink wall on the beveled rollers 192,

arch moving mechanism, the movable stop and over the flexible wings until brought up by a movable stop 203.

When the cooling water comes into contact with the interior surface of the plate, now located over the flexible curved wings, and resting on the flat of the beveled guide rollers 192, the plates interior begins to shrink, which action causes the straight edges of the plate to draw in; whereupon they leave the flat of the periphery of the guide rollers and move down the bevels, which causes the plate to lower itself upon the curved exterior of the cooler. As the shrinkage continues the flexible wings close in and the straight edges continue to move down the bevel of the rollers. But as the cooling operation progresses through the plate its outside commences to contract and gradually draws the straight edges back up the bevels of the rollers until they once more rest on theflat surface and the plate has returned to its original curvature. I

The plate remains upon the cooler guide rollers 192 until the next finishing operation begins, when, through connections with the 203 is lowered and the plate is free to move off the cooler down the guide rollers 192 and over rollers 204 positioned in recesses formed on two plate receiving brackets 205. It is lifted by the operator from these brackets, all finished and cooled ready to be attached to the printing press cylinders.

The movable stop 203 is supported in a recessed strip 206 fast on the lower end of the cooler sink 191. It is moved up or down by a rock lever 207, fast on a rock shaft 208, operating in bearings formed in the plate supporting and receiving brackets 205. A rock lever 209, fast on the end of the rock shaft 208 is pivoted to one end of a connecting rod 210. The opposite end of this-rod is pivoted to a vertically disposed arm 211 of a crank lever, which is mounted on a stud fast in the side frame B. A second arm 212 of the crank lever engages with a pin 213, fast on the adjacent bent guide roller rod 121 which is fast to the tie' piece 110 of the adjacent toggle-joint. By thus connecting the movable stop with the toggle-joint tie pieceit is caused to move in unison with the up and down movement of the arch. I have not claimed herein the finishing and cooling mechanisms by themselves as they constitute the subject matter of my divisional application on a semi-automatic stereotypeplate finishing and cooling machine, filed August 16, 1919, Serial No. 317,963. a

Although I have shown and described a preferred embodiment of the invention, I am aware of the fact that many modifications can'be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in these respects, but what I do claim is:

1. In a curved stereotype plate casting apparatus, the combination of a pivoted back and a pivoted core forming a vertically disposed casting chamber, and means for simultaneously turning the core and back in opposite directions from casting osition.

2. In a curved stereotype p ate casting apparatus, the combination of a core and back pivoted on different, stationary, parallel axes and forming between them a vertically disposed casting chamber, and means for turning them.

3. In a curved stereotype plate casting apparatus, the combination of a pivoted core, an independently pivoted back provided with a counterbalance, and means for turning the core on its pivot, said core and back being movable to a position to provide a vertical castin chamber.

4. In a stereotype p ate casting apparatus,

the combination of a core pivoted on a stationary axis, a pivoted back, and means for moving the back away from the core to allow the core-to turn on its pivot in substantially the opposite direction.

5. In a stereotype plate casting apparatus, the combination of a concave back and a convex core, both mounted to swing on parallel fixed axes, with means for turning the core and back.

6. In a stereotype plate casting apparatus, a concave back pivoted at its bottom, and a convex core pivoted on a transverse axis intersecting its convex side, for the purpose set forth.

7. In a stereotype plate casting apparatus, a matrix supporting back, a coacting core, manually operable means on the back for positioning a matrix, and means movably mounted on the core for clamping said matrix in position for the purpose set forth.

8. In a stereotype plate casting apparatus, a matrix supporting concave back having matrix holding means, a convex core having matrix clamping means, movably mounted thereon, and means for moving the clamping means to disengage the holding means.

9. In a stereotype plate casting apparatus, a matrix supporting concave back having matrix holding means, a-convex core having matrix clamping means, and means for guid ing the clamping means to cause it to disengage the holding means for the purpose set forth.

and a convex core forming a curved casting chamber therein between, of matrix bolster packing strips, matrix holders, locking means attached at each side of the back, matrix clamping means and castlng chamber locking means at each side of'the core,

ratus, thecombination of a matrix supportand means for moving the locking means into engagement to lock the castlng chamber and clamp the bolsters of a matrix positioned in the aforesaid chamber between the said packing strips and clamps 11. In a stereotype plate castmg apparatus, the combination with a concave back and aconvex core forming a curved casting chamber therein-between, of matrix holders, locking means attached at each side of. the back, matrix clamping means at each side of the core, and means for moving the look.- ing means to clamp the bolsters of a matrix positioned in the aforesaid chamber.

12. In a stereotype plate casting apparatus, the combination of a matr1x supporting back, a co-acting core, angularly movable slides on the back for posltioning a ma trix, and means on thecore for clamping said matrix in position.

13. In a stereotype plate casting apparatus, the combination of a matrix supporting back and a co-acting core, with a locking strip on one side of the back provided with an angularly disposed guide, and a matrix positioning slide movable along said guide.

14. In a stereotype plate casting apparatus, the-combination of a back and core forming a curved stereotype plate casting chamber between them, a locking strip on the straight side of the back having'a-n angularly disposed guide thereon, a manually movable matrix positioning slide carried by said guide, and a bar for clamping the matrix and pushing back said slide.

15. In a stereotype plate casting apparatus, the combination of a concave back, a convex core cooperating therewith, a look ing strip on each straight side of the back, an angularly disposed guide on each locking strip, a pair of movable matrix positioning slides, and a pair of bars for clamping the matrix and pushing said slides back out of 7 matrix positioning location.

16. In a stereotype plate casting appaback and core from their vertical positions,

and means for giving the core an additional horizontal motion for the purpose set forth.

18. In a stereotype plate casting appaing the said pouring sheet.

19. In "a stereotype plate casting appaing back, a pouring sheet supported independently ofthe' back, and means operated by the back for moving the pouring sheet into or out of operative position.

20. In a stereotype plate casting ,appa-' the pouring sheet longitudinally over the plate for the purpose set forth.

2 2. In a curved stereotype plate casting apparatus, the combination of a back, a core, a pouring piece supported independently of'both back'and core, means for separating the back and core, and means for turning the casting face of the core away from the pouring piece.- 1

23. In a stereotype plate casting appa ratus, the combination of a back and core forming a vertically disposed casting chamber, means for holding a matrix at the vertical sides of the casting chamber, means for holding the matrix at the bottom of the chamber, mean for holding the top margin of the matrix and guiding molten metal ing means during and after said separation. Y

24. In a stereotype plate casting apparatus, the combination of a back and movable core forming a vertically disposed casting chamber, a pouring sheet located therein, means for moving the pouring sheet, and means for thereafter moving the core, for the purpose set forth.

25. In a curved stereotype plate casting apparatus, a movable back, a core mounted to swing on a fixed axis, abottom ring and plate lifters carried by thecore, and means for moving the ring and lifters to free a plate cast on the surface of the core for the purpose set forth.

26. In a stereotype plate casting apparatus, the combination of a back and core forming a casting chamber, means for holding the top margin of the matrix and guiding molten metal over the same, means for 

